XAFS analysis of molten rare-earth-alkali metal fluoride systems

Sou Watanabe; Ashok K. Adya; Yoshihiro Okamoto; N. Umesaki; T. Honma; H. Deguchi; M. Horiuchi; T. Yamamoto; S. Noguchi; K. Takase; A. Kajinami; T. Sakamoto; M. Hatcho; N. Kitamura; Hiroshi Akatsuka; Haruaki Matsuura

doi:10.1016/j.jallcom.2005.04.105

XAFS analysis of molten rare-earth-alkali metal fluoride systems

Sou Watanabe
, Ashok K. Adya
, Yoshihiro Okamoto
, N. Umesaki
, T. Honma
, H. Deguchi
, M. Horiuchi
, T. Yamamoto
, S. Noguchi
, K. Takase
, A. Kajinami
, T. Sakamoto
, M. Hatcho
, N. Kitamura
, Hiroshi Akatsuka
, Haruaki Matsuura

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

X-ray absorption fine structure (XAFS) measurements on rare-earth-alkali metal fluoride systems (0.2 LnF3–0.8 MF: Ln = La, Ce, Nd, Sm; M = Li, Na, K) have been carried out at 300 and 1173 K. The local structures around rare-earth-ions in both the solid and liquid phases were evaluated by the curve-fitting analysis, involving anharmonic oscillation effects at the higher temperature. This study revealed that the nearest-neighbour Ln3+–F− distance and the corresponding coordination number of F− around Ln3+ in the molten state mainly depend on the lanthanide species rather than the size of the alkali metal ion.

Original language	English
Pages (from-to)	71-75
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	408-412
DOIs	https://doi.org/10.1016/j.jallcom.2005.04.105
Publication status	Published - 9 Feb 2006

Keywords

Rare-earth fluoride
Pyrochemical reprocessing
EXAFS
Local structure
Molten salt

Access to Document

10.1016/j.jallcom.2005.04.105

Cite this

Watanabe, S., Adya, A. K., Okamoto, Y., Umesaki, N., Honma, T., Deguchi, H., Horiuchi, M., Yamamoto, T., Noguchi, S., Takase, K., Kajinami, A., Sakamoto, T., Hatcho, M., Kitamura, N., Akatsuka, H., & Matsuura, H. (2006). XAFS analysis of molten rare-earth-alkali metal fluoride systems. Journal of Alloys and Compounds, 408-412, 71-75. https://doi.org/10.1016/j.jallcom.2005.04.105

@article{4c8f27772f684b26a76d0dc3c57982a3,

title = "XAFS analysis of molten rare-earth-alkali metal fluoride systems",

abstract = "X-ray absorption fine structure (XAFS) measurements on rare-earth-alkali metal fluoride systems (0.2 LnF3–0.8 MF: Ln = La, Ce, Nd, Sm; M = Li, Na, K) have been carried out at 300 and 1173 K. The local structures around rare-earth-ions in both the solid and liquid phases were evaluated by the curve-fitting analysis, involving anharmonic oscillation effects at the higher temperature. This study revealed that the nearest-neighbour Ln3+–F− distance and the corresponding coordination number of F− around Ln3+ in the molten state mainly depend on the lanthanide species rather than the size of the alkali metal ion.",

author = "Sou Watanabe and Adya, \{Ashok K.\} and Yoshihiro Okamoto and N. Umesaki and T. Honma and H. Deguchi and M. Horiuchi and T. Yamamoto and S. Noguchi and K. Takase and A. Kajinami and T. Sakamoto and M. Hatcho and N. Kitamura and Hiroshi Akatsuka and Haruaki Matsuura",

year = "2006",

month = feb,

day = "9",

doi = "10.1016/j.jallcom.2005.04.105",

language = "English",

volume = "408-412",

pages = "71--75",

journal = "Journal of Alloys and Compounds",

}

Watanabe, S, Adya, AK, Okamoto, Y, Umesaki, N, Honma, T, Deguchi, H, Horiuchi, M, Yamamoto, T, Noguchi, S, Takase, K, Kajinami, A, Sakamoto, T, Hatcho, M, Kitamura, N, Akatsuka, H & Matsuura, H 2006, 'XAFS analysis of molten rare-earth-alkali metal fluoride systems', Journal of Alloys and Compounds, vol. 408-412, pp. 71-75. https://doi.org/10.1016/j.jallcom.2005.04.105

TY - JOUR

T1 - XAFS analysis of molten rare-earth-alkali metal fluoride systems

AU - Watanabe, Sou

AU - Adya, Ashok K.

AU - Okamoto, Yoshihiro

AU - Umesaki, N.

AU - Honma, T.

AU - Deguchi, H.

AU - Horiuchi, M.

AU - Yamamoto, T.

AU - Noguchi, S.

AU - Takase, K.

AU - Kajinami, A.

AU - Sakamoto, T.

AU - Hatcho, M.

AU - Kitamura, N.

AU - Akatsuka, Hiroshi

AU - Matsuura, Haruaki

PY - 2006/2/9

Y1 - 2006/2/9

N2 - X-ray absorption fine structure (XAFS) measurements on rare-earth-alkali metal fluoride systems (0.2 LnF3–0.8 MF: Ln = La, Ce, Nd, Sm; M = Li, Na, K) have been carried out at 300 and 1173 K. The local structures around rare-earth-ions in both the solid and liquid phases were evaluated by the curve-fitting analysis, involving anharmonic oscillation effects at the higher temperature. This study revealed that the nearest-neighbour Ln3+–F− distance and the corresponding coordination number of F− around Ln3+ in the molten state mainly depend on the lanthanide species rather than the size of the alkali metal ion.

AB - X-ray absorption fine structure (XAFS) measurements on rare-earth-alkali metal fluoride systems (0.2 LnF3–0.8 MF: Ln = La, Ce, Nd, Sm; M = Li, Na, K) have been carried out at 300 and 1173 K. The local structures around rare-earth-ions in both the solid and liquid phases were evaluated by the curve-fitting analysis, involving anharmonic oscillation effects at the higher temperature. This study revealed that the nearest-neighbour Ln3+–F− distance and the corresponding coordination number of F− around Ln3+ in the molten state mainly depend on the lanthanide species rather than the size of the alkali metal ion.

U2 - 10.1016/j.jallcom.2005.04.105

DO - 10.1016/j.jallcom.2005.04.105

M3 - Article

VL - 408-412

SP - 71

EP - 75

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

XAFS analysis of molten rare-earth-alkali metal fluoride systems

Abstract

Keywords

Access to Document

Fingerprint

Cite this